Some recent research shows that rose plants can in fact tolerate relatively high NaCl salinity levels (up to 30 mM) with minimal or insignificant impact on flower yield and quality. This response is significantly affected by rootstock selection, with Rosa manetti and R. x ‘Natal Briar’ being relatively more salt tolerant than R. odorata (i.e. R. indica ‘Major’), R. multiflora ‘Rum 9’ and R. x ‘Dr. Huey’. Sodium and Cl accumulation in leaf tissue is affected by salt application levels and rootstock selection, with a remarkable Na exclusion being observed in plants grafted on R. manetti and R. x ‘Dr. Huey’. High productivity in cut-roses demands high water and nutrient inputs. Nitrogen (N) applied through liquid feeding can often result in annual N applications as high as 9000 kg Ha-1. Research indicates that these rates of are in excess of crop demand, with losses of Nitrogen due to leaching surpassing 50%. This can contribute to undesirable salt levels in the root zone. Roses have historically been categorized as salt-sensitive, an observation that contrasts with the recommended practice of providing high nutrient levels. It is made worse by the increasing utilization of poor-quality irrigation water and current pressures to recycle greenhouse drainage effluents to minimize pollution. R.I. Cabrera ISHS Acta Horticulturae 609: International Symposium on Managing Greenhouse Crops in Saline Environment www.actahort.org